Check out a recent video on how we use an electric collar to solve dog aggression:

It’s important to remember that, more than anything, the electric collar is a tool for communication. It’s not a tool for punishment.

When used as punishment it’s entirely possible that a dog’s aggression can get worse. When used to communicate skills like focus, calmness, and other skill sets, though, an electric collar can do an amazing job at teaching a dog to not be aggressive.